Concorde has been the only commercial jet that could gain time by flying west on the same route (
CDG-
JFK and
LHR-
JFK) as subsonic jets. Others have pointed out that there are many short flights in the US going west and crossing a time zone that arrive before they left, not uncommon at all. Of course, the Date Line makes all flights crossing it heading east arrive earlier than they left.
Historically, my favorite flight was a Pan Am 707 that left Auckland,
NZ at 11:59pm on Monday nights, and arrived in Papeete, Tahiti, at 6:06am Monday mornings.
Two complete Mondays to live through...I always thought that was fascinating!!
Those who want to do something will find a way; those who don't will find an excuse.